The coal-based synthetic ammonia plant uses GE coal water slurry (CWS) gasification technology with an axial CO-shift converter. The process initial start-up took place in February, 2012 using some domestic shift catalyst. The catalyst activity significantly declined only after 10 months since the initial start-up i.e. the CO content at the outlet of the converter reached 13.0 – 15.0%, which was way over the design limit of 8.0%. Besides, the operating temperature in the converter was out of the range of application. The plant owner eventually selected us to be their next supplier for both shift catalyst and protectant. We helped our client to troubleshoot the existing problems as well as potential bottlenecks. By providing top quality catalyst materials and excellent technical services now we have earned our customer’s trust and built a strong relationship with them.

After 4 years of operation, the catalysts’ was still performing well: the peak temperature appeared in the upper middle part of the bed and the outlet CO content for the 1st converter was lower than 4.0% (design limit ≤ 8.0%). We then signed another contract for supplying catalysts for the 2nd converter, which have been loaded into the converter and been operated since June, 2016. The standing out performance of our products helped our client save a huge amount of maintenance time and operating costs.

The DCS performance record shows the operating conditions for the 1st shift converter in July, 2017: